KR100836299B1 - shifting device for continuously variable transmission - Google Patents

shifting device for continuously variable transmission Download PDF

Info

Publication number
KR100836299B1
KR100836299B1 KR1020060076712A KR20060076712A KR100836299B1 KR 100836299 B1 KR100836299 B1 KR 100836299B1 KR 1020060076712 A KR1020060076712 A KR 1020060076712A KR 20060076712 A KR20060076712 A KR 20060076712A KR 100836299 B1 KR100836299 B1 KR 100836299B1
Authority
KR
South Korea
Prior art keywords
pressure chamber
sheave
pressure
pneumatic
movable sheave
Prior art date
Application number
KR1020060076712A
Other languages
Korean (ko)
Other versions
KR20080015244A (en
Inventor
윤주웅
Original Assignee
현대자동차주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 현대자동차주식회사 filed Critical 현대자동차주식회사
Priority to KR1020060076712A priority Critical patent/KR100836299B1/en
Publication of KR20080015244A publication Critical patent/KR20080015244A/en
Application granted granted Critical
Publication of KR100836299B1 publication Critical patent/KR100836299B1/en

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
    • F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
    • F16H9/04—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes
    • F16H9/12—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members
    • F16H9/16—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members using two pulleys, both built-up out of adjustable conical parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
    • F16G1/00—Driving-belts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/043—Guidance of lubricant within rotary parts, e.g. axial channels or radial openings in shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
    • F16H57/0435—Pressure control for supplying lubricant; Circuits or valves therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H9/00—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members
    • F16H9/02—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion
    • F16H9/04—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes
    • F16H9/12—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members
    • F16H9/125—Gearings for conveying rotary motion with variable gear ratio, or for reversing rotary motion, by endless flexible members without members having orbital motion using belts, V-belts, or ropes engaging a pulley built-up out of relatively axially-adjustable parts in which the belt engages the opposite flanges of the pulley directly without interposed belt-supporting members characterised by means for controlling the geometrical interrelationship of pulleys and the endless flexible member, e.g. belt alignment or position of the resulting axial pulley force in the plane perpendicular to the pulley axis

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmissions By Endless Flexible Members (AREA)
  • Control Of Transmission Device (AREA)

Abstract

본 발명은 무단 변속기의 구동풀리측 이동쉬브에 구비되는 압력실을 복수개로 분할하고, 각각의 압력실에 시차를 두고 댐핑특성과 응답특성이 상이한 별개의 압력원을 제공함으로써, 변속시 초기의 쇽크발생을 방지함과 더불어 변속의 응답특성을 향상시킬 수 있도록 하는 데 그 목적이 있다.The present invention divides the pressure chamber provided in the drive pulley side shift sheave of a continuously variable transmission into a plurality of, and provides a separate pressure source having different damping characteristics and response characteristics with a time difference in each pressure chamber, thereby providing an initial shank at the time of shifting. The purpose is to prevent the occurrence and to improve the response characteristics of the shift.

전술한 바의 목적을 달성하기 위해 본 발명은, 회전축상에 고정된 구동풀리측 고정쉬브와, 상기 고정쉬브와 대향되고 배면에 압력실을 형성하여 상기 압력실내 압력의 변화에 따라 상기 회전축의 축방향으로 이동가능하게 설치되는 이동쉬브 및, 상기 고정쉬브와 상기 이동쉬브 사이에서 마찰에 의해 구동력을 전달하는 금속벨트를 포함하는 무단 변속기의 변속장치에 있어서, 상기 변속장치는 변속시 시차를 두고 상기 이동쉬브에 가압력을 제공하는 복수의 가압수단과, 상기 가압수단으로부터 제공되는 가압력을 독립적으로 제공받기 위해 상기 이동쉬브의 배면에 복수개로 분할되게 형성된 압력실을 포함하는 것을 특징으로 한다.In order to achieve the above object, the present invention, the drive pulley side fixed sheave fixed on the rotating shaft, and the opposite side of the fixed sheave and the pressure chamber is formed on the rear side of the shaft of the rotating shaft in accordance with the change in pressure in the pressure chamber In the transmission of the continuously variable transmission comprising a movable sheave movable in the direction and a metal belt for transmitting a driving force by friction between the fixed sheave and the movable sheave, the transmission is shifted at a time difference at the time of shifting It characterized in that it comprises a plurality of pressing means for providing a pressing force to the movable sheave, and a pressure chamber formed to be divided into a plurality of on the back of the movable sheave to receive the pressing force provided from the pressing means independently.

무단 변속기, 구동풀리, 이동쉬브, 압력실, 응답, 댐핑 Continuously variable transmission, drive pulley, moving sheave, pressure chamber, response, damping

Description

무단 변속기의 변속장치{shifting device for continuously variable transmission}Shifting device for continuously variable transmission

도 1은 종래 무단 변속기의 변속장치에 대한 요부 구성을 도시한 도면.BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view showing a main configuration of a transmission of a conventional continuously variable transmission.

도 2는 본 발명에 따른 무단 변속기의 변속장치에 대한 요부 구성을 도시한 도면.2 is a view showing a main configuration of the transmission of the continuously variable transmission according to the present invention.

< 도면의 주요 부분에 대한 부호의 설명 >    <Description of Symbols for Main Parts of Drawings>

10-고정쉬브 12-회전축10-fixed sheave 12-rotation shaft

14-압력실 16-이동쉬브14-pressure chamber 16-moving sheave

18-금속벨트 20-공압펌프18-metal belt 20-pneumatic pump

22-공압통로 24-공압제어밸브22-Pneumatic Passage 24-Pneumatic Control Valve

26-유압펌프 28-유압통로26-Hydraulic Pump 28-Hydraulic Pathway

30-공압제어밸브30-pneumatic control valve

본 발명은 무단 변속기의 변속장치에 관한 것으로, 보다 상세하게는 구동풀 리측 이동쉬브의 배면에 변속시 댐핑성능과 응답성능을 동시에 향상시킬 수 있도록 하는 가압수단을 구비한 무단 변속기의 변속장치에 관한 것이다.The present invention relates to a transmission of a continuously variable transmission, and more particularly, to a transmission of a continuously variable transmission having a pressurizing means for simultaneously improving the damping performance and the response performance when shifting the rear surface of a driving pulley-side moving sheave. will be.

일반적으로 무단 변속기는 자동 변속기와는 달리 주어진 변속패턴에 따라 최고의 변속비와 최저의 변속비 사이를 연속적으로 무한대의 단으로 변속시킴으로써 엔진으로부터 발생된 구동력을 최대한 이용할 수 있도록 하여 우수한 동력성능과 연비향상을 구현할 수 있도록 하는 장치이다.In general, continuously variable transmissions, unlike automatic transmissions, continuously shift between the highest and the lowest transmission ratios to infinite stages according to a given shift pattern, thereby making the most of the driving power generated from the engine, thereby achieving excellent power performance and fuel economy. It is a device to make it possible.

종래 벨트 구동형 무단 변속기의 변속장치는 엔진으로부터 구동력을 전달받는 유성기어셋트와 연결된 입력 회전축상에 설치된 구동풀리에 구비되는 바, 이의 상세한 구성은 도 1에 도시된 바와 같다.The transmission of the conventional belt driven continuously variable transmission is provided in a drive pulley installed on an input rotational shaft connected to a planetary gear set that receives a driving force from an engine. A detailed configuration thereof is illustrated in FIG. 1.

즉, 구동풀리측 고정쉬브(1)가 회전축(3)상에 구비되고, 상기 고정쉬브(1)와 대향되고 배면에 압력실(5)을 형성하는 이동쉬브(7)가 상기 압력실(5)내 압력의 변화에 의해 상기 회전축(3)의 축방향을 따라 이동가능하게 설치된다.That is, the driving pulley side fixed sheave 1 is provided on the rotating shaft 3, and the movable sheave 7 which faces the fixed sheave 1 and forms the pressure chamber 5 on the back side is the pressure chamber 5. ) Is installed to be movable along the axial direction of the rotary shaft (3) by a change in the pressure in the).

그리고, 상기 고정쉬브(1)와 상기 이동쉬브(7) 사이에는 이들과의 마찰에 의해 종동풀리(도시안됨)측으로 구동력을 전달하는 금속벨트(9)가 설치된다.And, between the fixed sheave 1 and the movable sheave 7 is provided with a metal belt 9 for transmitting a driving force to the driven pulley (not shown) by friction with them.

또한, 상기 회전축(3)에는 상기 압력실(5)로 유압의 인가를 위한 유압통로(3a)가 형성되고, 상기 유압통로(3a)로의 유압의 인가 및 해제는 변속제어유니트(도시안됨)의 제어에 따라 동작되는 유압제어밸브(도시안됨)에 의해 이루어진다.In addition, a hydraulic passage 3a for applying hydraulic pressure to the pressure chamber 5 is formed in the rotary shaft 3, and application and release of hydraulic pressure to the hydraulic passage 3a are performed by a shift control unit (not shown). By a hydraulic control valve (not shown) operated in accordance with the control.

그런데, 상기와 같은 구조의 종래 무단 변속기의 변속장치에서는 변속시 상기 압력실(5)내 오일을 채우는 데 시간이 걸리기 때문에 변속의 응답성능이 떨어지는 문제가 있었다.However, in the transmission of the conventional continuously variable transmission having the above structure, it takes a long time to fill the oil in the pressure chamber 5 at the time of shifting, so there is a problem that the response performance of the shift falls.

또한, 변속시 상기 압력실(5)내 유압의 작용에 따라 상기 이동쉬브(7)가 고정쉬브(1)를 향해 이동하면서 상기 금속벨트(9)를 구동풀리측 외경부로 가압하여 이동시킬 때, 상기 금속벨트(9)로부터 상기 이동쉬브(7)로 전달되는 반력에 의해 변속쇽크가 수반되는 문제가 있었다.In addition, when the shifting sheave 7 moves toward the fixed sheave 1 under the action of the hydraulic pressure in the pressure chamber 5 during shifting, when the metal belt 9 is pressed and moved to the outer diameter of the driving pulley side, There was a problem that the shift shank is accompanied by the reaction force transmitted from the metal belt (9) to the movable sheave (7).

이에 본 발명은 상기와 같은 점을 감안하여 안출된 것으로, 무단 변속기의 구동풀리측 이동쉬브에 구비되는 압력실을 복수개로 분할하고, 각각의 압력실에 시차를 두고 댐핑특성과 응답특성이 상이한 별개의 압력원을 제공함으로써, 변속시 초기의 쇽크발생을 방지함과 더불어 변속의 응답특성을 향상시킬 수 있도록 하는 데 그 목적이 있다.Accordingly, the present invention was conceived in view of the above, and divided into a plurality of pressure chambers provided in the drive pulley side shift sheave of the continuously variable transmission, and each of the pressure chambers has a time difference and a different damping characteristic and a response characteristic. The purpose of the present invention is to provide a pressure source of and to prevent the occurrence of an initial shank during the shift and to improve the response characteristic of the shift.

상기와 같은 목적을 달성하기 위한 본 발명은, 회전축상에 고정된 구동풀리측 고정쉬브와, 상기 고정쉬브와 대향되고 배면에 압력실을 형성하여 상기 압력실내 압력의 변화에 따라 상기 회전축의 축방향으로 이동가능하게 설치되는 이동쉬브 및, 상기 고정쉬브와 상기 이동쉬브 사이에서 마찰에 의해 구동력을 전달하는 금속벨트를 포함하는 무단 변속기의 변속장치에 있어서, 상기 변속장치는 변속시 시차를 두고 상기 이동쉬브에 가압력을 제공하는 복수의 가압수단과, 상기 가압수단으로부터 제공되는 가압력을 독립적으로 제공받기 위해 복수개로 분할된 압력실 및, 주행중 가속상태의 검출을 통해 상기 가압수단의 동작을 제어하는 변속제어유니트를 포함하는 것을 특징으로 한다.The present invention for achieving the above object, the driving pulley side fixed sheave fixed on the rotating shaft, and the opposite side of the fixed sheave and forming a pressure chamber on the back to the axial direction of the rotating shaft in accordance with the change in the pressure in the pressure chamber In the transmission of the continuously variable transmission including a movable sheave installed to be movable to the transmission, and a metal belt for transmitting a driving force by friction between the fixed sheave and the movable sheave, the transmission is shifted with a time difference when shifting A plurality of pressurizing means for providing a pressing force to the sheave, a pressure chamber divided into a plurality of pieces to receive the pressing force provided from the pressurizing means independently, and shift control for controlling the operation of the pressurizing means through the detection of an acceleration state during driving. It characterized in that it comprises a unit.

또한, 상기 가압수단은 급가속시 국한되어 댐핑성능과 응답성능을 고려하여 상기 이동쉬브를 상기 금속벨트와의 접촉위치에 이르기까지 이동시키도록 동작되는 제1가압수단과, 상기 제1가압수단의 동작과 시차를 두고 작동되고 실질적인 변속의 기능을 수행하는 제2가압수단으로 이루어지고; 상기 압력실은 상기 제1가압수단으로부터 제공되는 가압력을 인가받는 제1압력실과, 상기 제2가압수단으로부터 제공되는 가압력을 인가받는 제2압력실로 분할되어 형성된 것을 특징으로 한다.In addition, the pressurizing means is limited to rapid acceleration, considering the damping performance and the responsiveness of the first pressing means which is operated to move the movable sheave to the contact position with the metal belt, and the first pressing means of the A second pressing means which is operated at a time difference with the operation and performs a function of substantially shifting; The pressure chamber may be divided into a first pressure chamber to receive the pressing force provided from the first pressing means, and a second pressure chamber to receive the pressing force provided from the second pressing means.

이하 본 발명의 실시예를 첨부된 예시도면을 참조로 상세히 설명한다.Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

도면에 도시된 바와 같이, 구동풀리측 원추형상의 고정쉬브(10)는 회전축(12)과 일체로 형성되고, 상기 고정쉬브(10)와 대향된 위치에는 동일한 원추형상의 이동쉬브(16)가 상기 회전축(12)상으로 이동가능하게 설치되며, 상기 이동쉬브(16)의 배면에는 변속시 이종(異種)의 압력원으로부터 제공되는 유/공압의 가압력이 작용하는 압력실(14)이 마련된다.As shown in the figure, the driving pulley-side cone-shaped fixed sheave 10 is formed integrally with the rotating shaft 12, the same cone-shaped moving sheave 16 in the position opposite to the fixed sheave 10 is the rotary shaft A pressure chamber 14 is provided on the rear surface of the movable sheave 16, and the pressure chamber 14 acts on the oil / pneumatic pressing force provided from a heterogeneous pressure source at the time of shifting.

상기 고정쉬브(10)와 상기 이동쉬브(16) 사이에는 이들과의 마찰에 의해 종동풀리(도시안됨)측으로 구동력을 전달하는 브이형 금속벨트(18)가 설치된다.Between the fixed sheave 10 and the movable sheave 16 is provided a V-shaped metal belt 18 for transmitting a driving force to the driven pulley (not shown) by friction with them.

이 경우, 상기 이동쉬브(16)에는 변속시 시차를 두고 이동쉬브(16)에 가압력을 제공하는 복수의 가압수단이 구비되어 있는 바, 상기 가압수단은 급가속시 국한되어 댐핑성능과 응답성능을 고려하여 상기 이동쉬브(16)를 상기 금속벨트(18)와의 접촉위치에 이르기까지 이동시키도록 동작되는 제1가압수단과, 상기 제1가압수단의 동작과 시차를 두고 작동되어 실질적인 변속의 기능에 해당되는 상기 금속벨트(18)를 구동풀리의 반경방향 외측으로 이동시키는 제2가압수단으로 이루어진다.In this case, the moving sheave 16 is provided with a plurality of pressing means for providing a pressing force to the moving sheave 16 with a time difference when shifting, the pressing means is limited during rapid acceleration to damping performance and response performance In consideration of the function of the first shift means and the first press means which is operated to move the movement sheave 16 to the contact position with the metal belt 18, and at a time difference with the operation of the first press means. It consists of a second pressing means for moving the metal belt 18 corresponding to the radially outer side of the drive pulley.

그리고, 상기 가압수단의 동작은 주행중인 차량의 가속상태를 검출하는 스로틀포지션센서(TPS)로부터 검출되는 차량의 가속상태에 따라 결정된다. 즉, 상기 스로틀포지션센서(TPS)로부터 검출된 차량의 가속상태가 급가속(WOT; Wide Open Throttle)이면, 변속제어유니트(TCU)는 상기 가압수단의 동작을 제어하게 되는 것이다.Then, the operation of the pressing means is determined according to the acceleration state of the vehicle detected from the throttle position sensor TPS for detecting the acceleration state of the driving vehicle. That is, when the acceleration state of the vehicle detected from the throttle position sensor TPS is Wide Open Throttle (WOT), the shift control unit TCU controls the operation of the pressurizing means.

또한, 상기 압력실(14)은 상기 가압수단으로부터 제공되는 가압력을 독립적으로 제공받기 위해 상기 이동쉬브(16)의 배면에서 복수개로 분할되게 형성되는 바, 즉 상기 압력실(14)은 상기 제1가압수단으로부터 제공되는 가압력을 인가받는 제1압력실(14a)과, 상기 제2가압수단으로부터 제공되는 가압력을 인가받는 제2압력실(14b)로 분할되어 형성된다.In addition, the pressure chamber 14 is formed to be divided into a plurality of on the back of the movable sheave 16 in order to independently receive the pressing force provided from the pressing means, that is, the pressure chamber 14 is the first The first pressure chamber 14a is applied to the pressing force provided from the pressing means, and the second pressure chamber 14b is applied to the pressing force provided from the second pressing means.

상기 제1가압수단은 공압펌프(20)로부터 제공되는 공압을 상기 제1압력실(14a)로 공급하는 공압통로(22)와, 상기 공압통로(22)상에 설치되어 공압의 인가를 제어하는 공압제어밸브(24)로 이루어진다.The first pressurizing means includes a pneumatic passage 22 for supplying the pneumatic pressure provided from the pneumatic pump 20 to the first pressure chamber 14a, and installed on the pneumatic passage 22 to control the application of pneumatic pressure. It consists of a pneumatic control valve 24.

상기 제2가압수단은 유압펌프(26)로부터 제공되는 유압을 상기 제2압력실(14b)로 공급하는 유압통로(28)와, 상기 유압통로(28)상에 설치되어 유압의 인가를 제어하는 유압제어밸브(30)로 이루어진다.The second pressurizing means includes a hydraulic passage 28 for supplying the hydraulic pressure provided from the hydraulic pump 26 to the second pressure chamber 14b, and installed on the hydraulic passage 28 to control the application of the hydraulic pressure. It consists of a hydraulic control valve (30).

이 경우, 상기 공압펌프(20)와 상기 유압펌프(26)는 엔진과 연동되는 것이 바람직하고, 상기 공압제어밸브(24)와 상기 유압제어밸브(30)는 이의 개폐조절이 변속제어유니트(TCU)에 의해 이루어지는 것은 물론이다.In this case, the pneumatic pump 20 and the hydraulic pump 26 is preferably interlocked with the engine, the pneumatic control valve 24 and the hydraulic control valve 30 is the opening and closing control of the shift control unit (TCU) Of course, it is made by).

상기 제1압력실(14a)은 상기 이동쉬브(16)의 배면에서 상기 이동쉬브(16)의 몸체부(16a)의 외주면을 기밀있게 수용하는 제1실린더부재(32)에 의해 형성되고, 상기 제2압력실(14b)은 상기 제1실린더부재(32)의 내부에서 상기 이동쉬브(16)의 축중심측 허브부(16b)를 기밀있게 수용하는 제2실린더부재(34)에 의해 형성된다.The first pressure chamber 14a is formed by a first cylinder member 32 that hermetically receives an outer circumferential surface of the body portion 16a of the movable sheave 16 from the rear surface of the movable sheave 16. The second pressure chamber 14b is formed by the second cylinder member 34 which hermetically receives the axial center hub portion 16b of the movable sheave 16 inside the first cylinder member 32. .

이 경우, 상기 제1압력실(14a)의 수압면적은 상기 제2압력실(14b)의 수압면적 보다 크게 형성되어, 변속 초기에 상기 이동쉬브(16)의 빠른 이동을 도모하여 변속의 응답성을 향상시키고, 변속 말기에 상기 이동쉬브(16)의 부드러운 이동을 도모하여 변속의 쇽크를 줄일 수 있도록 한다.In this case, the pressure receiving area of the first pressure chamber 14a is made larger than the pressure receiving area of the second pressure chamber 14b, so that the moving sheave 16 can be moved quickly at the beginning of the shift, thereby responsiveness of shifting. In this case, the shifting sheave 16 can be smoothly moved at the end of the shift to reduce the shank of the shift.

또한, 상기 이동쉬브(16)의 몸체부(16a)에는 상기 제1실린더부재(32)와의 기밀 유지를 위한 제1실링재(36)가 설치되고, 상기 이동쉬브(16)의 허브부(16b)에는 상기 제2실린더부재(34)와의 기밀 유지를 위한 제2실링재(38)가 설치된다.In addition, the body portion 16a of the movable sheave 16 is provided with a first sealing material 36 for maintaining the airtightness with the first cylinder member 32, the hub portion 16b of the movable sheave 16 The second sealing member 38 for maintaining the airtight with the second cylinder member 34 is installed.

상기 공압통로(22)의 종단에는 상기 제1압력실(14a)을 향해 유동단면적이 확장되는 디퓨져(22a)가 구비되어, 변속 초기에 상기 제1압력실(14a)의 내부로 제공되는 공압의 빠른 인가를 도울 수 있도록 함으로써, 역시 변속의 응답성을 향상시키도록 되어 있다.At the end of the pneumatic passage 22 is provided with a diffuser 22a which extends the flow cross-sectional area toward the first pressure chamber 14a, so that a pneumatic pressure provided to the inside of the first pressure chamber 14a at the beginning of shifting is provided. By enabling quick application, it is also intended to improve the response of the shift.

따라서, 상기와 같이 구성된 본 발명은, 주행중 급가속(WOT)이 이루어지면, 상기 변속제어유니트(TCU)는 스로틀포지션센서(TPS)를 매개로 이를 검출하게 되고, 이어, 상기 변속제어유니트(TCU)는 상기 제1가압수단을 동작시켜 상기 제1압력실 (14a)내에 단시간내 공압을 제공할 수 있도록 한다.Therefore, the present invention configured as described above, when the rapid acceleration (WOT) is made while driving, the shift control unit (TCU) detects it through the throttle position sensor (TPS), and then, the shift control unit (TCU) ) Operates the first pressurizing means to provide the pneumatic pressure within the first pressure chamber 14a in a short time.

즉, 상기 공압펌프(20)에 의해 발생된 공압은 상기 공압통로(22)를 통해 디퓨져(22a)를 거처 상기 제1압력실(14a)내로 공급되는 것이다.That is, the pneumatic pressure generated by the pneumatic pump 20 is supplied into the first pressure chamber 14a via the diffuser 22a through the pneumatic passage 22.

이때, 상기 제1압력실(14a)내에 제공된 공압은 상기 이동쉬브(16)의 위치를 상기 금속벨트(18)가 위치한 부위까지 신속하게 이동시킬 수 있게 됨으로써, 변속의 응답성을 향상시킬 수 있게 된다. 아울러 이 과정에 있어 상기 제1압력실(14a)내에 제공된 공압은 상기 이동쉬브(16)와 상기 금속벨트(18) 사이의 접촉에 의해 상기 금속벨트(18)로부터 상기 이동쉬브(16)에 작용하는 반력에 대한 완충기능을 할 수 있게 되므로, 일종의 댐핑특성을 구현할 수 있게 되어 변속의 쇽크를 줄일 수 있게 된다.At this time, the pneumatic pressure provided in the first pressure chamber 14a can quickly move the position of the movable sheave 16 to the position where the metal belt 18 is located, thereby improving the response of the shift. do. In addition, in this process, the pneumatic pressure provided in the first pressure chamber 14a acts on the movable sheave 16 from the metal belt 18 by contact between the movable sheave 16 and the metal belt 18. Since it is possible to function as a buffer against the reaction force, it is possible to implement a kind of damping characteristics to reduce the shank of the shift.

이어, 상기 제2가압수단에 의해 상기 제2압력실(14b)내에 유압이 제공되면, 즉, 상기 유압펌프(26)에 의해 발생된 유압은 상기 유압통로(28)를 거쳐 상기 제2압력실(14b)내로 공급되고, 상기 제2압력실(14b)내로 제공된 유압은 상기 이동쉬브(16)를 상기 고정쉬브(10)측으로 보다 강력하게 이동시켜 상기 금속벨트(18)가 고정쉬브(10)와 이동쉬브(16) 사이에서 반경방향으로 외측으로 밀려 나갈 수 있게 한다.Then, when the hydraulic pressure is provided in the second pressure chamber 14b by the second pressing means, that is, the hydraulic pressure generated by the hydraulic pump 26 passes through the hydraulic passage 28 to the second pressure chamber. The hydraulic pressure supplied into the 14b and the second pressure chamber 14b moves the movable sheave 16 more strongly toward the fixed sheave 10 so that the metal belt 18 is fixed to the fixed sheave 10. And radially outward between the movable sheave 16.

이 결과, 변속시 제1가압수단과 제2가압수단의 역할 분담으로 인해 상기 이동쉬브(16)의 배면에 구비된 압력실(14)내에는 단시간내에 압력의 상승이 초래될 수 있으므로, 변속의 응답성이 향상될 수 있게 된다.As a result, in the pressure chamber 14 provided on the rear surface of the movable sheave 16 due to the role-sharing of the first and second pressurizing means during shifting, an increase in pressure may occur within a short time. Responsiveness can be improved.

아울러, 상기와 같은 변속중 일련의 과정에 있어서, 상기 공압통로(22)와 상 기 유압통로(28)의 개폐는 변속제어유니트(TCU)에 의해 작동이 조절되는 상기 공압제어밸브(24)와 상기 유압제어밸브(30)에 의해 이루어짐은 물론이다.In addition, in the series of processes as described above, the opening and closing of the pneumatic passage 22 and the hydraulic passage 28 is the pneumatic control valve 24 and the operation is controlled by the shift control unit (TCU) and Of course, it is made by the hydraulic control valve (30).

이상 설명한 바와 같이 본 발명에 따른 무단 변속기의 변속장치에 의하면, 무단 변속기의 구동풀리측 이동쉬브의 배면에 형성되는 압력실을 복수개로 분할하고, 각각의 압력실에 댐핑특성과 응답특성이 상이한 이종(異種)의 압력원으로부터 제공되는 유/공압의 가압력을 시차를 두고 인가함으로써, 변속시 초기의 쇽크발생을 방지함과 더불어 변속의 응답특성을 향상시킬 수 있는 효과가 있게 된다.As described above, according to the transmission of the continuously variable transmission according to the present invention, a plurality of pressure chambers formed on the rear surface of the driving pulley side shift sheave of the continuously variable transmission are divided into plural, and the pressure chambers have different damping characteristics and response characteristics. By applying the hydraulic / pneumatic pressing force provided from the pressure source in (i) at a time difference, it is possible to prevent the occurrence of initial check during shifting and to improve the response characteristics of the shifting.

Claims (6)

회전축상에 고정된 구동풀리측 고정쉬브와, 상기 고정쉬브와 대향되고 배면에 압력실을 형성하여 상기 압력실내 압력의 변화에 따라 상기 회전축의 축방향으로 이동가능하게 설치되는 이동쉬브 및, 상기 고정쉬브와 상기 이동쉬브 사이에서 마찰에 의해 구동력을 전달하는 금속벨트를 포함하는 무단 변속기의 변속장치에 있어서, A driving pulley side fixed sheave fixed to the rotating shaft, a movable sheave which is installed to be movable in the axial direction of the rotating shaft in accordance with a change in the pressure in the pressure chamber by forming a pressure chamber opposite to the fixed sheave and the pressure chamber; In the transmission of the continuously variable transmission comprising a metal belt for transmitting a driving force by friction between the sheave and the movable sheave, 상기 변속장치는 변속시 시차를 두고 상기 이동쉬브에 가압력을 제공하는 복수의 가압수단과, 상기 가압수단으로부터 제공되는 가압력을 독립적으로 제공받기 위해 복수개로 분할된 압력실 및, 주행중 가속상태의 검출을 통해 상기 가압수단의 동작을 제어하는 변속제어유니트를 구비하고; The transmission device includes a plurality of pressurizing means for providing a pressing force to the movable sheave with a time difference at the time of shifting, a pressure chamber divided into a plurality of sections to independently receive the pressing force provided from the pressurizing means, and detecting the acceleration state during driving. A shift control unit for controlling the operation of the pressing means through; 상기 가압수단은 상기 이동쉬브를 상기 금속벨트와의 접촉위치에 이르기까지 이동시키는 제1가압수단과, 상기 제1가압수단과 별개로 작동되어 변속을 수행하는 제2가압수단을 구비하며; The pressing means includes first pressing means for moving the movable sheave to a contact position with the metal belt, and second pressing means operated separately from the first pressing means for shifting; 상기 압력실은 상기 제1가압수단으로부터 제공되는 가압력을 인가받는 제1압력실과, 상기 제2가압수단으로부터 제공되는 가압력을 인가받는 제2압력실로 각각 분할되어 형성된 것을 특징으로 하는 무단 변속기의 변속장치.And the pressure chamber is divided into a first pressure chamber to receive a pressing force provided from the first pressing means and a second pressure chamber to receive a pressing force provided from the second pressing means. 삭제delete 청구항 1에 있어서, The method according to claim 1, 상기 제1가압수단은 공압펌프와, 상기 공압펌프로부터 제공되는 공압을 상기 제1압력실로 공급하는 공압통로 및, 상기 공압통로상에 설치되어 공압의 인가를 제어하는 공압제어밸브로 이루어지고; The first pressurizing means comprises a pneumatic pump, a pneumatic passage for supplying the pneumatic pressure provided from the pneumatic pump to the first pressure chamber, and a pneumatic control valve installed on the pneumatic passage to control the application of pneumatic pressure; 상기 제2가압수단은 유압펌프와, 상기 유압펌프로부터 제공되는 유압을 상기 제2압력실로 공급하는 유압통로 및, 상기 유압통로상에 설치되어 유압의 인가를 제어하는 유압제어밸브로 이루어진 것을 특징으로 하는 무단 변속기의 변속장치.The second pressurizing means includes a hydraulic pump, a hydraulic passage for supplying the hydraulic pressure provided from the hydraulic pump to the second pressure chamber, and a hydraulic control valve installed on the hydraulic passage to control the application of the hydraulic pressure. Gearbox of continuously variable transmission. 청구항 3에 있어서, The method according to claim 3, 상기 제1압력실은 상기 이동쉬브의 배면에서 상기 이동쉬브의 몸체부의 외주면을 기밀있게 수용하는 제1실린더부재에 의해 형성되고, 상기 제2압력실은 상기 제1실린더부재의 내부에서 상기 이동쉬브의 축중심측 허브부를 기밀있게 수용하여 상기 제1압력실과 독립된 공간을 이루는 제2실린더부재에 의해 형성된 것을 특징으로 하는 무단 변속기의 변속장치.The first pressure chamber is formed by a first cylinder member that hermetically receives an outer circumferential surface of the body portion of the movable sheave on the rear surface of the movable sheave, and the second pressure chamber is formed in the shaft of the movable sheave within the first cylinder member. And a second cylinder member formed in a space independent from the first pressure chamber by hermetically receiving the hub portion of the center side. 청구항 4에 있어서, The method according to claim 4, 상기 제1압력실의 수압면적은 상기 제2압력실의 수압면적 보다 크게 형성된 것을 특징으로 하는 무단 변속기의 변속장치.The pressure receiving area of the first pressure chamber is larger than the pressure receiving area of the second pressure chamber, the transmission of the continuously variable transmission. 청구항 5에 있어서, The method according to claim 5, 상기 공압통로의 종단에는 상기 제1압력실을 향해 유동단면적이 확장되는 디퓨져가 구비된 것을 특징으로 하는 무단 변속기의 변속장치.The transmission of the continuously variable transmission, characterized in that the end of the pneumatic passage is provided with a diffuser extending the flow cross-sectional area toward the first pressure chamber.
KR1020060076712A 2006-08-14 2006-08-14 shifting device for continuously variable transmission KR100836299B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020060076712A KR100836299B1 (en) 2006-08-14 2006-08-14 shifting device for continuously variable transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020060076712A KR100836299B1 (en) 2006-08-14 2006-08-14 shifting device for continuously variable transmission

Publications (2)

Publication Number Publication Date
KR20080015244A KR20080015244A (en) 2008-02-19
KR100836299B1 true KR100836299B1 (en) 2008-06-09

Family

ID=39383830

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020060076712A KR100836299B1 (en) 2006-08-14 2006-08-14 shifting device for continuously variable transmission

Country Status (1)

Country Link
KR (1) KR100836299B1 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005003012A (en) * 2003-06-09 2005-01-06 Jatco Ltd Belt-type continuously variable transmission

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005003012A (en) * 2003-06-09 2005-01-06 Jatco Ltd Belt-type continuously variable transmission

Also Published As

Publication number Publication date
KR20080015244A (en) 2008-02-19

Similar Documents

Publication Publication Date Title
US8092325B2 (en) Continuously variable belt transmission for a vehicle
US8657720B2 (en) Shift control apparatus for continuously variable transmission
US7677997B2 (en) Double piston and belt type continuously variable transmission
US8758198B2 (en) Power transmitting apparatuses
JP5192509B2 (en) Automatic transmission control device and control method thereof
US6719664B2 (en) Control apparatus of lock-up clutch for vehicle and control method thereof
JP5170255B2 (en) Sheave positioning device
KR20050074301A (en) Continuously variable transmission
US8353799B2 (en) Control of and control method for vehicle continuously variable transmission
US10302193B2 (en) Method and device for controlling automatic transmission
US6800044B2 (en) Speed change control apparatus for continuously variable transmission
US10428935B2 (en) Method and device for controlling automatic transmission
US4730523A (en) Transmission ratio control system for an infinitely variable transmission
US10316960B2 (en) Method and device for controlling automatic transmission
US7537543B2 (en) Speed change control device for belt type continuously variable transmission
KR100836299B1 (en) shifting device for continuously variable transmission
US20080096719A1 (en) Hydraulic control device for continuously variable transmisson
KR100792856B1 (en) Shifting device for continuously variable transmission
JP2005299803A (en) Hydraulic control device for vehicular belt continuously variable transmission
JP6349544B2 (en) Hydraulic control device
KR100867805B1 (en) shifting device for continuously variable transmission
KR100273583B1 (en) Oil chamber structure of continuously variable transmission for vehicle
JP2005140232A (en) Shift control device for belt-type continuously variable transmission
KR19990031672U (en) Continuously variable transmission
JP2017096367A (en) Automatic transmission

Legal Events

Date Code Title Description
A201 Request for examination
E902 Notification of reason for refusal
E701 Decision to grant or registration of patent right
GRNT Written decision to grant
FPAY Annual fee payment

Payment date: 20120531

Year of fee payment: 5

LAPS Lapse due to unpaid annual fee